%Chan定位算法
clear;clc;
C?=?300000000;?%?光速（米每秒）
R?=?1000;??????%?小區(qū)半徑（米）
Rn?=?R/1000;???%（km）
x_delta?=?0;
y_delta?=?0;
e?=?0;
%?stda?=?0.01;
%?蜂窩系統(tǒng)各基站坐標
X1?=?0;
Y1?=?0;
X2?=?R*（1+sqrt（3）/2）;
Y2?=?0;
X3?=?R*（sqrt（3）/2）;
Y3?=?R*（-3/2）;
X4?=?R*（-sqrt（3）/2）;
Y4?=?R*（-3/2）;
X5?=?R*（-1-（sqrt（3）/2））;
Y5?=?0;
X6?=?R*（-sqrt（3）/2）;
Y6?=?R*（3/2）;
X7?=?R*（sqrt（3）/2）;
Y7?=?R*（3/2）;

%?KM?=?XM^2?+?YM^2
K1?=?Ka（X1Y1）;
K2?=?Ka（X2Y2）;
K3?=?Ka（X3Y3）;
K4?=?Ka（X4Y4）;
K5?=?Ka（X5Y5）;
K6?=?Ka（X6Y6）;
K7?=?Ka（X7Y7）;
%?XM_1?=?XM?-?X1；YM_1?=?YM?-?X1
X2_1?=?Xab（X2X1）;
Y2_1?=?Xab（Y2Y1）;
X3_1?=?Xab（X3X1）;
Y3_1?=?Xab（Y3Y1）;
X4_1?=?Xab（X4X1）;
Y4_1?=?Xab（Y4Y1）;
X5_1?=?Xab（X5X1）;
Y5_1?=?Xab（Y5Y1）;
X6_1?=?Xab（X6X1）;
Y6_1?=?Xab（Y6Y1）;
X7_1?=?Xab（X7X1）;
Y7_1?=?Xab（Y7Y1）;
%?隨機產(chǎn)生MS的位置（x，y）
?u?=?rand（1）;
?y?=?（R/2）*（1-sqrt（u））
?v?=?（sqrt（3）*（（R/2）-y））*rand（1）;
?x?=?sqrt（3）*y?+?v
%?x?=?300;
%?y?=?800;
%?計算MS到各基站的距離
R1?=?distance（X1Y1xy）;
R2?=?distance（X2Y2xy）;
R3?=?distance（X3Y3xy）;
R4?=?distance（X4Y4xy）;
R5?=?distance（X5Y5xy）;
R6?=?distance（X6Y6xy）;
R7?=?distance（X7Y7xy）;

num?=?5;
PPP=1000;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?Chan算法
????for?i?=?1:num
????????sgma?=?i*30;
????????for?ss?=?1:PPP
????????????%?RM_1為帶誤差的距離差
????????????R2_1?=?Rab（R2R1）?+?gngauss（sgma）;
????????????T2_1（ss）?=?R2_1/C;
????????????R3_1?=?Rab（R3R1）?+?gngauss（sgma）;
????????????T3_1（ss）?=?R3_1/C;
????????????R4_1?=?Rab（R4R1）?+?gngauss（sgma）;
????????????T4_1（ss）?=?R4_1/C;
????????????R5_1?=?Rab（R5R1）?+?gngauss（sgma）;
????????????T5_1（ss）?=?R5_1/C;
????????????R6_1?=?Rab（R6R1）?+?gngauss（sgma）;
????????????T6_1（ss）?=?R6_1/C;
????????????R7_1?=?Rab（R7R1）?+?gngauss（sgma）;
????????????T7_1（ss）?=?R7_1/C;
????????end
????????%?各TDOA測量值的方差
????????T2_1_fangcha?=?var（T2_1）;
????????T3_1_fangcha?=?var（T3_1）;
????????T4_1_fangcha?=?var（T4_1）;
????????T5_1_fangcha?=?var（T5_1）;
????????T6_1_fangcha?=?var（T6_1）;
????????T7_1_fangcha?=?var（T7_1）;?
????????
????????for?k?=?1:PPP
????????????%?假設MS到BSi的距離與MS到BS1的距離差為：R2_1=Ri-R1產(chǎn)生的誤差方差為sgma，TDOA（時間差）為：Ti_1＝Ri_1/C
????????????sgma?=?i*30;
????????????R2_1?=?Rab（R2R1）?+?gngauss（sgma）;
????????????T2_1?=?R2_1/C;
????????????R3_1?=?Rab（R3R1）?+?gngauss（sgma）;
????????????T3_1?=?R3_1/C;
????????????R4_1?=?Rab（R4R1）?+?gngauss（sgma）;
????????????T4_1?=?R4_1/C;
????????????R5_1?=?Rab（R5R1）?+?gngauss（sgma）;
????????????T5_1?=?R5_1/C;
????????????R6_1?=?Rab（R6R1）?+?gngauss（sgma）;
????????????T6_1?=?R6_1/C;
????????????R7_1?=?Rab（R7R1）?+?gngauss（sgma）;
????????????T7_1?=?R7_1/C;
????????????h?=?1/2*[HH（R2_1X2Y2X1Y1）;HH（R3_1X3Y3X1Y1）;HH（R4_1X4Y4X1Y1）;HH（R5_1X5Y5X1Y1）;HH（R6_1X6Y6X1Y1）;HH（R7_1X7Y7X1Y1）];
????????????Ga?=?-[X2_1Y2_1R2_1;X3_1Y3_1R3_1;X4_1Y4_1R4_1;X5_1Y5_1R5_1;X6_1Y6_1R6_1;X7_1Y7_1R7_1];
????????????EQ?=?diag（[T2_1_fangcha;T3_1_fangcha;T4_1_fangcha;T5_1_fangcha;T6_1_fangcha;T7_

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4617??2011-08-10?10:24??Fang_Taylor_Chan\Chan.asv

?????文件???????4617??2011-08-10?10:26??Fang_Taylor_Chan\Chan.m

?????文件??????15512??2011-05-08?19:01??Fang_Taylor_Chan\chanpk.m

?????文件???????8697??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang4PK.m

?????文件??????12227??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang4PK_COST.m

?????文件???????8773??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang5PK.m

?????文件??????12298??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang5PK_COST.m

?????文件???????8890??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang6PK.m

?????文件??????12327??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang6PK_COST.m

?????文件???????8962??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang7PK.m

?????文件??????12057??2011-05-08?19:01??Fang_Taylor_Chan\Chan_Taylor_Fang7PK_COST.m

?????文件?????????72??2011-05-08?19:01??Fang_Taylor_Chan\distance.m

?????文件???????2137??2011-05-26?21:09??Fang_Taylor_Chan\Fang.asv

?????文件???????2137??2011-05-26?21:09??Fang_Taylor_Chan\Fang.m

?????文件????????789??2011-05-08?19:01??Fang_Taylor_Chan\gngauss.m

?????文件????????189??2011-05-08?19:01??Fang_Taylor_Chan\GT3.m

?????文件????????268??2011-05-08?19:01??Fang_Taylor_Chan\GT4.m

?????文件????????347??2011-05-08?19:01??Fang_Taylor_Chan\GT5.m

?????文件????????426??2011-05-08?19:01??Fang_Taylor_Chan\GT6.m

?????文件????????505??2011-05-08?19:01??Fang_Taylor_Chan\GT7.m

?????文件?????????73??2011-05-08?19:01??Fang_Taylor_Chan\HH.m

?????文件?????????43??2011-05-08?19:01??Fang_Taylor_Chan\Ka.m

?????文件??????95712??2011-05-08?19:01??Fang_Taylor_Chan\matlab_4bsPK.mat

?????文件?????104280??2011-05-08?19:01??Fang_Taylor_Chan\matlab_4bsPK_COST.mat

?????文件??????96248??2011-05-08?19:01??Fang_Taylor_Chan\matlab_5bsPK.mat

?????文件?????104960??2011-05-08?19:01??Fang_Taylor_Chan\matlab_5bsPK_COST.mat

?????文件??????96824??2011-05-08?19:01??Fang_Taylor_Chan\matlab_6bsPK.mat

?????文件?????105680??2011-05-08?19:01??Fang_Taylor_Chan\matlab_6bsPK_COST.mat

?????文件??????97448??2011-05-08?19:01??Fang_Taylor_Chan\matlab_7bsPK.mat

?????文件?????106448??2011-05-08?19:01??Fang_Taylor_Chan\matlab_7bsPK_COST.mat

............此處省略11個文件信息